8.6E Conservation of Mass Notes Flashcard

Front

What is a chemical reaction?

Back

A process in which one or more substances (reactants) are changed into different substances (products)

Front

What happens to atoms during a chemical reaction?

Back

They rearrange to form new substances with different chemical properties

Front

According to the Law of Conservation of Mass, what cannot happen to matter during a chemical reaction?

Back

Matter cannot be created or destroyed.

Front

What must be true about the total mass of reactants and products after a chemical reaction?

Back

The total mass of reactants must be equal to the total mass of products.

Front

Which equation correctly represents the Law of Conservation of Mass?

Back

Mass of Reactants = Mass of Products

Front

What happens to atoms during the process of photosynthesis?

Back

They are rearranged and new bonds are formed

Front

According to the Law of Conservation of Mass, what elements will be present on the products side in the reaction: C₂H₆O + 3O₂ → ?

Back

Carbon, Hydrogen, Oxygen

Front

Why is it important to have an understanding of the Law of Conservation of Mass?

Back

It helps us understand that mass is neither created nor destroyed in a chemical reaction.

Front

Why can mass seem to "disappear" in open systems during a chemical reaction?

Back

Because some products may be gases that escape into the atmosphere.

Front

Back

The total mass of reactants equals the total mass of products.